Andreas Huber | d2506a5 | 2014-01-29 10:32:46 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013, The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | //#define LOG_NDEBUG 0 |
| 18 | #define LOG_TAG "MediaHTTPConnection-JNI" |
| 19 | #include <utils/Log.h> |
| 20 | |
| 21 | #include <binder/MemoryDealer.h> |
| 22 | #include <media/stagefright/foundation/ADebug.h> |
| 23 | #include <nativehelper/ScopedLocalRef.h> |
| 24 | |
| 25 | #include "android_media_MediaHTTPConnection.h" |
| 26 | #include "android_util_Binder.h" |
| 27 | |
| 28 | #include "android_runtime/AndroidRuntime.h" |
| 29 | #include "jni.h" |
| 30 | #include "JNIHelp.h" |
| 31 | |
| 32 | namespace android { |
| 33 | |
| 34 | JMediaHTTPConnection::JMediaHTTPConnection(JNIEnv *env, jobject thiz) |
| 35 | : mClass(NULL), |
| 36 | mObject(NULL), |
| 37 | mByteArrayObj(NULL) { |
| 38 | jclass clazz = env->GetObjectClass(thiz); |
| 39 | CHECK(clazz != NULL); |
| 40 | |
| 41 | mClass = (jclass)env->NewGlobalRef(clazz); |
| 42 | mObject = env->NewWeakGlobalRef(thiz); |
| 43 | |
| 44 | mDealer = new MemoryDealer(kBufferSize, "MediaHTTPConnection"); |
| 45 | mMemory = mDealer->allocate(kBufferSize); |
| 46 | |
| 47 | ScopedLocalRef<jbyteArray> tmp( |
| 48 | env, env->NewByteArray(JMediaHTTPConnection::kBufferSize)); |
| 49 | |
| 50 | mByteArrayObj = (jbyteArray)env->NewGlobalRef(tmp.get()); |
| 51 | } |
| 52 | |
| 53 | JMediaHTTPConnection::~JMediaHTTPConnection() { |
| 54 | JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| 55 | |
| 56 | env->DeleteGlobalRef(mByteArrayObj); |
| 57 | mByteArrayObj = NULL; |
| 58 | env->DeleteWeakGlobalRef(mObject); |
| 59 | mObject = NULL; |
| 60 | env->DeleteGlobalRef(mClass); |
| 61 | mClass = NULL; |
| 62 | } |
| 63 | |
| 64 | sp<IMemory> JMediaHTTPConnection::getIMemory() { |
| 65 | return mMemory; |
| 66 | } |
| 67 | |
| 68 | jbyteArray JMediaHTTPConnection::getByteArrayObj() { |
| 69 | return mByteArrayObj; |
| 70 | } |
| 71 | |
| 72 | } // namespace android |
| 73 | |
| 74 | using namespace android; |
| 75 | |
| 76 | struct fields_t { |
| 77 | jfieldID context; |
| 78 | |
| 79 | jmethodID readAtMethodID; |
| 80 | }; |
| 81 | |
| 82 | static fields_t gFields; |
| 83 | |
| 84 | static sp<JMediaHTTPConnection> setObject( |
| 85 | JNIEnv *env, jobject thiz, const sp<JMediaHTTPConnection> &conn) { |
| 86 | sp<JMediaHTTPConnection> old = |
Colin Cross | 5e8ff02 | 2014-03-19 17:28:42 -0700 | [diff] [blame] | 87 | (JMediaHTTPConnection *)env->GetLongField(thiz, gFields.context); |
Andreas Huber | d2506a5 | 2014-01-29 10:32:46 -0800 | [diff] [blame] | 88 | |
| 89 | if (conn != NULL) { |
| 90 | conn->incStrong(thiz); |
| 91 | } |
| 92 | if (old != NULL) { |
| 93 | old->decStrong(thiz); |
| 94 | } |
Colin Cross | 5e8ff02 | 2014-03-19 17:28:42 -0700 | [diff] [blame] | 95 | env->SetLongField(thiz, gFields.context, (jlong)conn.get()); |
Andreas Huber | d2506a5 | 2014-01-29 10:32:46 -0800 | [diff] [blame] | 96 | |
| 97 | return old; |
| 98 | } |
| 99 | |
| 100 | static sp<JMediaHTTPConnection> getObject(JNIEnv *env, jobject thiz) { |
Colin Cross | 5e8ff02 | 2014-03-19 17:28:42 -0700 | [diff] [blame] | 101 | return (JMediaHTTPConnection *)env->GetLongField(thiz, gFields.context); |
Andreas Huber | d2506a5 | 2014-01-29 10:32:46 -0800 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | static void android_media_MediaHTTPConnection_native_init(JNIEnv *env) { |
| 105 | ScopedLocalRef<jclass> clazz( |
| 106 | env, env->FindClass("android/media/MediaHTTPConnection")); |
| 107 | CHECK(clazz.get() != NULL); |
| 108 | |
Colin Cross | 7acd69b | 2014-03-20 11:23:29 -0700 | [diff] [blame] | 109 | gFields.context = env->GetFieldID(clazz.get(), "mNativeContext", "J"); |
Andreas Huber | d2506a5 | 2014-01-29 10:32:46 -0800 | [diff] [blame] | 110 | CHECK(gFields.context != NULL); |
| 111 | |
| 112 | gFields.readAtMethodID = env->GetMethodID(clazz.get(), "readAt", "(J[BI)I"); |
| 113 | } |
| 114 | |
| 115 | static void android_media_MediaHTTPConnection_native_setup( |
| 116 | JNIEnv *env, jobject thiz) { |
| 117 | sp<JMediaHTTPConnection> conn = new JMediaHTTPConnection(env, thiz); |
| 118 | |
| 119 | setObject(env, thiz, conn); |
| 120 | } |
| 121 | |
| 122 | static void android_media_MediaHTTPConnection_native_finalize( |
| 123 | JNIEnv *env, jobject thiz) { |
| 124 | setObject(env, thiz, NULL); |
| 125 | } |
| 126 | |
| 127 | static jobject android_media_MediaHTTPConnection_native_getIMemory( |
| 128 | JNIEnv *env, jobject thiz) { |
| 129 | sp<JMediaHTTPConnection> conn = getObject(env, thiz); |
| 130 | |
Marco Nelissen | dce9740 | 2014-11-14 08:00:42 -0800 | [diff] [blame] | 131 | return javaObjectForIBinder(env, IInterface::asBinder(conn->getIMemory())); |
Andreas Huber | d2506a5 | 2014-01-29 10:32:46 -0800 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | static jint android_media_MediaHTTPConnection_native_readAt( |
| 135 | JNIEnv *env, jobject thiz, jlong offset, jint size) { |
| 136 | sp<JMediaHTTPConnection> conn = getObject(env, thiz); |
Andreas Huber | d2506a5 | 2014-01-29 10:32:46 -0800 | [diff] [blame] | 137 | if (size > JMediaHTTPConnection::kBufferSize) { |
| 138 | size = JMediaHTTPConnection::kBufferSize; |
| 139 | } |
| 140 | |
| 141 | jbyteArray byteArrayObj = conn->getByteArrayObj(); |
| 142 | |
| 143 | jint n = env->CallIntMethod( |
| 144 | thiz, gFields.readAtMethodID, offset, byteArrayObj, size); |
| 145 | |
| 146 | if (n > 0) { |
| 147 | env->GetByteArrayRegion( |
| 148 | byteArrayObj, |
| 149 | 0, |
| 150 | n, |
| 151 | (jbyte *)conn->getIMemory()->pointer()); |
| 152 | } |
| 153 | |
| 154 | return n; |
| 155 | } |
| 156 | |
Daniel Micay | 76f6a86 | 2015-09-19 17:31:01 -0400 | [diff] [blame] | 157 | static const JNINativeMethod gMethods[] = { |
Andreas Huber | d2506a5 | 2014-01-29 10:32:46 -0800 | [diff] [blame] | 158 | { "native_getIMemory", "()Landroid/os/IBinder;", |
| 159 | (void *)android_media_MediaHTTPConnection_native_getIMemory }, |
| 160 | |
| 161 | { "native_readAt", "(JI)I", |
| 162 | (void *)android_media_MediaHTTPConnection_native_readAt }, |
| 163 | |
| 164 | { "native_init", "()V", |
| 165 | (void *)android_media_MediaHTTPConnection_native_init }, |
| 166 | |
| 167 | { "native_setup", "()V", |
| 168 | (void *)android_media_MediaHTTPConnection_native_setup }, |
| 169 | |
| 170 | { "native_finalize", "()V", |
| 171 | (void *)android_media_MediaHTTPConnection_native_finalize }, |
| 172 | }; |
| 173 | |
| 174 | int register_android_media_MediaHTTPConnection(JNIEnv *env) { |
| 175 | return AndroidRuntime::registerNativeMethods(env, |
| 176 | "android/media/MediaHTTPConnection", gMethods, NELEM(gMethods)); |
| 177 | } |
| 178 | |